Vacuum fuel-feed tank construction



W. JAY.

VACUUM FUEL FEED TANK CONSTRUCTION.

APPLICATION FILED OCT. 16, 1919.

11,370,450. Patented Mar. 1, 19

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I 6 I J o UNITED STATES mm OFFICE.

VAGUUMIUEL-TBED TANK CONSTRUCTION.

Specification of letters Patent.

Patented Mar. 1, 1921.

\ Application filed O Etobcr 1 6, 1918. Serial No. 331,107.

,vide an improved construction for the tanks of vacuum fuel feeddevices. It consists in the elements and features of construction shownand described, as indicated in the claims.

In the drawings:

The figure is a vertical axial section of vacuum fuel feed tanksembodying this invention.

The specific purpose of the present invention is to simplify and cheapenthe cost of manufacture of the tanks of vacuum fuel feed devices of awell known type which comprise a vacuum chamber A, and a reserve chamberB, with vacuum, air inlet and liquid inlet connections to the vacuumchamber, an outlet valve from the vacuum chamber to the reserve chamber,and supply connections from the reserve chamber to the carbureter, and adrainage connection, and which comprise an annular chamber or extensionof the reserve chamber encompassing the vacuum chamber for the purposeof providing for expansion of the contents of said reserve chamber underheat to which the device is frequently exposed. For the purpose ofeconomy and simplicity of construction in embodying these necessaryelements, the tank shown comprises a main body member, 1, which iscylindrical in form and is preferably formed cup-shaped,that is to say,spun or pressed or formed otherwise from a single sheet of metal so asto have a closed bottom and anopen top, said onepiece member comprisingboth the vacuum chamber and the reserve chamber which are partitionedfrom each other by a transaxial partition, 2, most conveniently formedalso in cup form, adapted to fit within the cylindrical body membbr andbe permanently secured thereto by well known methods, as by sweating, soas to make a liquid-tight and air-tight junction. Immediately below theplane of the transaxial partition, 2, the member, 1, has a series ofapertures, 3, opening into the lower chamber B,the reserve chamber ;andoutside said body member, 1, there is fitted upon it a sleeve, 4, whosediameter throughout its length in general is enough greater than theoutside diameter of the body member, 1, to constitute an annularchamber, 4, between said body member and said sleeve; the lowerend ofsaid sleeve being contracted as shown at 4", to fit snugly on the outersurface of the cylindrlcal body member, 1, and to be united permanentlythereto as by sweating, forming an a r-fight and liquid-tight junction.At the upper end of the body member, 1, there is provided a terminalfitting, 5, angular in cross-section so as to form a cylindrical sleeveflange, 5*, whose thickness is substantially the Width of the annularinterspace between the sleeve, 4, and the said body member, 1, so thatit fits therein and may be permanently joined to both said parts toclose at the upper end the annular chamber, 4*}. The

horizontal flange of said fitting serves for securing the cap member, 6,which carries as usual, suction, air and liquid fuel inlet connections,8, 9 and 10, respectively. 11 is the usual outlet valve from the'upperchamber, A, to the lower chamber, B. An atmosphere connection with theannular'chamber, 4*, is conveniently made through the spacing flange, 5as seen at 5", registering with an aperture, 6*, in the cap member, 6,with which connection will be made for vapor dlscharge at any desireddistance from and away from the device as indicated by the pipe, 9. 12and 13 are respectively the carbureter connection and the drainageconnection from the chamber, B.

I claim 1. In a device for the pur ose indicated, a receptacle having atransaxial partition intermediate its upper and lower ends, defining anupper chamber having an atmospheric, a suction and a liquid supplyconnection, and a lower chamber having a liquid outlet; said partitionhaving an outlet valve from the upper to the lower chamber; a sleeveadapted at its lower end to fit outside the receptacle and having itsupper portion of greater diameter than the outer diameter of'thereceptacle for forming an annular chamber around said receptacle, and aterminal fitting for the upper end of the receptacleahaving a flangeembracing said upper end. and serving to space the upper end of thesleeve from the outer surface of the rece tacl'e and occupy the space,

the 'receptac e having apertures at a transaxial plane below the planeof the transaxial partitlon and above the plane of the junction of thelower contracted end of the sleeve with the outer wall of thereceptacle.

2. Ina device for the purpose indicated, a receptacle comprising aone-piece body member of substantially cylindrical form with an inte ralbottom and 0 en top; a sleeve adapted to be passed outsideof saidcylindrical member, having its lower end contracted to fit the outersurface of the latter and s aced away from the said outer surface romsaid contracted lower end; a fitting for the upper end of the bodymember adapted to close the upper end of the annular cavity formedbetween said sleeve and said body member, said body member havingapertures at a transaxial plane above the zone of junction of saidsleeve at its lower end with the said body member, and a transaxialpartition in said member above the plane of said aperture; a cap forsaid receptacle having suction, atmosphere inlet and liquid inletconnections, and a valve controlling flow from the chamber above saidpartition to the chamber formed below the same.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois,this 13 day of October, 1919.

WEBB JAY.

